how much will it cost to replace a collapsed lifter, my car only has 15000 miles on 2003 Ford Explorer. can a collapsed lifter be repaired without disassembling the engine just passed smog no trouble codes just a noisy lifter. by rcguru46 in San Francisco, CA on December 24, 2013. Find a Shop.
Bohr developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level (or orbit) to another.
He became fascinated with Physics. Bohr's mentor was Ernest Rutherford who said that atoms were made up of a nucleus with electrons orbiting around it. Bohr expanded Rutherford's theory by defining the paths that electrons follow. Bohr also won the Nobel Prize in 1922 for his atomic model.ohr's mentor was Ernest Rutherford who said that atoms were made up of a nucleus with electrons orbiting around it. Bohr expanded Rutherford's theory by defining the paths that electrons follow.